excellent qualityBy richon 7/2/2011

Worth the extra money. You can tumble this stuff much faster without it breaking up. As usual, BRS has the best quality and prices

works great....regular is better?By Mileson 7/2/2011

Miles would recommend this product to a friend

more than double the cost of the regular gfo but not equally better. Works great if space is an issue, otherwise stick with the standard brs gfo!

hands down By eric on 5/26/2011

eric would recommend this product to a friend

i was using a a competitors gfo for years and thought it was the best ... till i tried brs h Capacity Ferric Oxide its hands down the best i have ever used and lasts twice as long as others

IMO Quality, Setup, OperationBy BrooklynSteeloon 5/23/2011

BrooklynSteelo would recommend this product to a friend

When your ready to setup your GFO reactor's performance this product will not let you down. I have this running in my Deluxe GFO reactor with MAXIJEt 1200. IMO BRS's recommendations are the best choice. Watch the videos on BRS, they are awesome.

Best valueBy Philon 5/14/2011

Phil would recommend this product to a friend

This is hands down the most effective reactor media to control phosphate levels. It works out to be less expensive due to the absorption capacity.

incredibleBy Douglason 5/3/2011

Douglas would recommend this product to a friend

have used many phosphate removers. Non compare to the quality or consistency of GFO HCFO highly recommend Little pricey but performance and amount necessary outweighs the cost difference of competetiors products. Thanks BRS

does the trickBy cocugreek5on 5/1/2011

cocugreek5 would recommend this product to a friend

I had high phosphates around 1. This is the first gfo I have used and based on my present experience and those of others, I won't be changing anytime soon. That goes for the gfo as well which holds up well and the water out of the reactor is still less than the tank itself after 2 weeks. Keep in mind this is the first time I ran a phosphate remover in the 6 years of the tank. The hc gfo is great for these situations where there is real severe phosphate problems. It does great in a single reactor and perfect if your tank is under 125 gallons. With the regular gfo and lets say a 150 you would have to go with brs' jumbo reactor. I wish it was cheaper but you get what you pay for.

Best GFO Out By Scott on 4/30/2011

Scott would recommend this product to a friend

This stuff really works my phosphate was at 0.83 and it dropped it over night to 0.24 that is really a sign that this product really works. I have used other products and nothing ever came close to this. A little expensive but this goes to show you you get what you pay for!!!!

Fantastic productBy Daniel on 4/30/2011

Daniel would recommend this product to a friend

Now that my tank is established and I'm slowly introducing different livestock I noticed that the zoanthids stopped opening up. I read online and the blogs were saying that high phosphate levels in the water would stop the zoanthids from opening. I purchased 3.5 Pounds Bulk GFO High Capacity Ferric Oxide and a reactor from BRS and within a week of having the GFO filtering the water the Zoanthids started to open. Now a month later the Zoas are in full bloom and look amazing.

Total ControlBy azreefgeekon 4/13/2011

azreefgeek would recommend this product to a friend

I have used many GFO products, and this one seems to hold its own. I do not have to change the media in my reactor nearly as often to keep low phosphate levels in my tank with this product. Buy in bulk and save!

Working like it should!By Juneon 2/19/2011

June would recommend this product to a friend

Purchased this for our 180 gal SPS dominant/fish heavy aquarium along with the Hanna meter. Added in 1 C of this stuff to our Warner Marine reactor (BRS calculator rec'd 1.44 C) but I wanted to start low so as to not freak out the corals. In about 36 hours, PO4 went from 0.58 to 0.26. Any small amounts of red cyano or green that were on the rocks or glass are going away! Going to up the dosage today or tomorrow to get ALL the PO4 outta there! Wonderful product. I have tried Two Little Fishes before, and it worked OK, but I think this product is so much better and for the price/amount you get, you can't beat it. Going to add it to our 24 gal JBJ nano as a precautionary. Thank you BRS!!

great productBy Chuon 1/19/2011

Chu would recommend this product to a friend

I personally found GFO HC is better than regular GFC. With the same amount, it seems to get rid of the cyano I have, while regular GFO just stop the cyano from spreading but not totally destroying it.